Quick question about JMeter WebSocket handshake failures at scale

Quick question about WebSocket handshake failures when scaling JMeter 5.6.2 threads.

Background

Running load tests from Asia/Singapore. Targeting Genesys Cloud platform_api.

Issue

At 100 concurrent threads, 40% fail with WebSocket Error 1006. Happens only when exceeding 50 threads.

Troubleshooting

Verified API keys are valid. Network latency is low. Checked docs for explicit connection limits per IP. Any known thresholds for new accounts?